Combined rotary kiln and drier.



PATENTED MAR. 22, 1904.

C. A. MATOHAM. COMBINED ROTARY KILN AND DRIER.

APPLIOATION FILED JAN. 11, 1904.

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NO MODEL.

No. 755,513. PATENTED MAR. 22, 1904.

G. A. MATOHAM. COMBINED ROTARY KILN AND DRIER.

APPLICATION FILED JAN. 11, 1904. N0 MODEL.

' 2' BHEETSBHEIIT 2.

' UNITED ibhrnrns Patented March 22, 1904.

PATENT rrrcn.

COMBINED ROTARY IKIILN AND DRIER.

SPECIFICATION forming part of Letters Patent No. 755,513, dated March 22, 1904. Application filed January 11, 1904. Serial No. 188,513. (No model.)

To all whom it may concern.-

Be it known that I, OHARLns A. MATCHAM, a citizen of the United States, and a resident of Allentown, Pennsylvania, have invented a certain Improved Combined Rotary Kiln and Drier, of which the following is a specification.

The object of my invention is to use the waste products of combustion from a rotary kiln to dry material in a rotary drier and provide the device with simple means by which the products of combustion can be passed directly up a flue after leaving the kiln or pass through the drier. This object I attain in the following manner, reference being had to the accompanying drawings, in which- Figure 1 is a side view of my improved rotary kiln and drier partly in section, illustrating my invention. Fig. 2 is aplan View, partly in section; and Fig. 3 is an enlarged sectional view of a portion of Fig. 1. i

A is an ordinary rotary kiln, preferably arranged in an inclined position, as shown, and supported and driven in the ordinary manner. The outlet end of the kiln extends into a suitable hood a, mounted on the base A, and through which the material is discharged. The inlet end of the kiln extends into astack E, and material is fed to the kiln through a chute or other supply device a.

The kiln may be heated by any of the methods now in use, either by injecting fuel into the outlet end of the kiln or heating it externally by a furnace surrounding the drum.

At the upper end of the stack E is a damper a, hung by a chain a, which passes around guide-wheels and extends within easy reach of the operator. This damper regulates the flow of the products of combustion through the stack.

B is a rotary drier arranged also on an incline and preferably in line with the rotary kiln A, although in some instances it may be arranged in a different line, if desired.

D is a flue-section extending from the stack E througha supporting-wall C in the present in stance, and beyond this wall is a coupling-section F, carried on a truck F and so arranged that it can be moved laterally out of line with the connection D. The coupling-section couples the flue-section D with the rotary drier B. WVhen the coupling-section is in place, it forms a continuation of the flue from the rotary kiln to the drier.

The opposite end of the drier extends into a stack 1, and the drier is provided with afeedchute d and an outlet 6.

When the drier is not to be used, the coupling-section F is removed and a plate is secured to the flange of the connecting-flue D, so as to prevent the products of combustion passing through the flue. In this event all the products of combustion will pass through the stack E, the damper being open. When, however, it is desired to use both the rotary kiln and rotary drier, the section F is placed in position and the damper e of the stack E is closed, and all the products of combustion will pass through the rotary drier and out of the stack I. By adjusting the damper 6, so as to regulate the flow of the products of combustion through the stack E, more or less of the products of combustion will pass through the drier.

My invention is especially applicable in connection with the rotary kilns used in the process of making Portland cement, so that the different materials can be dried by the products of combustion passing from the rotary kiln. Thus considerable money is saved in fuel, and the apparatus can be either used singly as a rotary kiln or as a combined rotary kiln and drier.

I claim as my invention 1. The combination of arotary kiln, adrier, a stack between the kiln and the drier and with which both communicate, with means for regulating the flow of the products of combustion from the kiln, substantially as described.

2. The combination of a rotary kiln, adrier, a stack communicating with one end of the kiln and one end of the drier, a valve in said stack to regulate the flow of the products of combustion, and a stack at the opposite end of the drier, substantially as described.

3. The combination of a rotary kiln, a. stack, a flue connection, both the rotary kiln and flue connection communicating with the stack, a

rotary drier, a coupling forming connection ed, and a stack at the opposite end of the between one end of the rotary drier and the drier, substantially as described.

flue, and a stack at one end of the rotary drier, In testimony WhereofI have signed my name substantially as described. to this specification in the presence of two sub- 5 4h Tile confibifieition of a rotary kilnfia stack scribing Witnesses.

wit w ic1 t e i n communicates, a ue connection communicating with the stack, a ro= CHAS MATCHAM' tary drier, a coupling between the flue con- Witnesses:

nection and one end of the rotary drier, a HARRY T. VVETZEL,

I truck upon which the flue connection is mount- Grass. 0. HEFELFINGER. 

